ring group

I have a customers' phone system I'm trying to install on our FusionPBX hosted system. Here's all the information I have: Starting Setup: Ext. 201: Yealink T48S Desk Phone and Yealink W60B Base Station w/ 2 Handsets Ext. 202: GroundWire Softphone Ext. 203: Grandstream GXP2135 Ext. 204...

Hey Guys, Maybe somebody here can be kind enough to assist... I have a fusionpbx install with 4 extensions under 1 of the domains, If I set the inbound route to dial a specific extension, when I call in. it works... As soon as I set it to a ring group which calls all extensions simultaneously...